Home / 105,555.90-145,665.66-57,809.24

Finding the Fourth Proportional to 105,555.90, 145,665.66 and 57,809.24

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Solution

The fourth proportional to 105,555.90, 145,665.66 and 57,809.24 is: 79,775.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,555.90 : 145,665.66 = 57,809.24 : x
  2. Step 2: Convert to fraction form
    105,555.90/145,665.66 = 57,809.24/x
  3. Step 3: Cross multiply
    105,555.90x = 145,665.66 × 57,809.24
  4. Step 4: Simplify right side
    105,555.90x = 8,420,821,098.70
  5. Step 5: Solve for x
    x = 8,420,821,098.70/105,555.90
  6. Step 6: Final answer
    x = 79,775.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.